J'ai bien lu le texte en entier, et je ne peux qu'être d'accord avec la conclusion:

Conclusion
I really enjoyed testing out these three lenses which I have been very interested in buying. I feel it is much better to get your hands on the items and test them for yourself, you might find that one just feels right.

I was secretly hoping that the Sigma was going to blow me away and match the Canon’s quality and at £1000 less but i’m afraid it didn’t. The extra money on the Canon 85 f1.2 in my eye’s at least does give you that something more, that something special in the images. £1000 is a lot of money but sometimes the difference between good and great is very small and the Canon just has that little something extra that I feel is very important, It will last you a long time and it’s resale value will stay high if you ever decided to get rid of it for whatever reason.

A surprise though was that the lens I liked best out of all three was the 50mm f1.2. I originally wasn’t going to test this one as I was looking for a 85mm focal length, I just decided on a whim to give it a go. It’s not as sharp as the 85 f1.2, it’s probably on par if not better than the Sigma. I really liked the colours it rendered and the ability to shoot at f1.2 for low light and would be great for 3/4 portraits on location.

I am not stinking rich and can only choose one lens out of the three, I think I will try and get the Canon 85 f1.2 as I need a portrait focal length more than any other at the moment for my business. I already have the Canon 50mm f1.4 which is a great lens and I am happy with its results so buying the 50 1.2 would be more of a luxury than a needed purchase. Although if you are looking for a 50 and are considering the canon 1.2 I say go for it and never look back.
Reste à savoir ce que l'on veut vraiment, et non à se borner à ne voir qu'au travers de son porte-feuille. Nulle part l'auteur de l'article, ne prétend que le Sigma égale vraiment ni surpasse l'EF50mm 1.2 puisque ce sont les deux qu'il compare, étant satisfait par son EF50mm 1.4.